I admit ignorance of the newer hi-tech finishes in exterior use.
However, as a manufacturer of exterior doors, I have settled on Sikkens as the preferred finish when 'over time' is concerned. It is not the winner on the first day, but it looks good on down the road, and the big bonus is that it is designed to be recoated easily. And removed in case it ever comes to that. This is what makes it unique. Just as a good boat varnish is not made to last forever, it is made to be removed and replaced by new finish. Sikkens does not normally need to be removed, but it does need periodic recoating.
The problem with all these bullet proof finishes - epoxy being one of them - is that they WILL eventually fail, and when they do, water gets under that film and so the film has to be removed - meaning a chemical and or mechanical stripping.
The history on this is clear - In the mid 90's, a large California/Mexican/Bolivian company that imported doors into the US came up with a great 12 step furniture grade finish for their doors. However, in time the finish would fail. The costs to remove and refinish on site were often as much as new doors, plus the duration and difficulty of working in a home. They are no longer in business.
Admittedly, this is the long view. I have been making exterior doors for 40 years, and Sikkens is the one finish I can recommend for most situations that involve exposure.
A table will most likely need to be recoated every year if it has much exposure. There is a reason that unfinished Teak is the preferred wood for this use. There is a reason why you don't see Mahogany finished furniture outside. It doesn't work.